Initial commit: ROA2WEB - FastAPI + Vue.js + Telegram Bot

Modern ERP Reports Application with microservices architecture

Tech Stack:
- Backend: FastAPI + python-oracledb (Oracle DB integration)
- Frontend: Vue.js 3 + PrimeVue + Vite
- Telegram Bot: python-telegram-bot + SQLite
- Infrastructure: Shared database pool, JWT authentication, SSH tunnel

Features:
- FastAPI backend with async Oracle connection pool
- Vue.js 3 responsive frontend with PrimeVue components
- Telegram bot alternative interface
- Microservices architecture with shared components
- Complete deployment support (Linux Docker + Windows IIS)
- Comprehensive testing (Playwright E2E + pytest)

Repository Structure:
- reports-app/ - Main application (backend, frontend, telegram-bot)
- shared/ - Shared components (database pool, auth, utils)
- deployment/ - Deployment scripts (Linux & Windows)
- docs/ - Project documentation
- security/ - Security scanning and git hooks

reports-app/telegram-bot/app/db/__init__.py

@@ -0,0 +1,68 @@
+"""
+Database module for Telegram Bot
+
+Provides SQLite database operations for:
+- User management and Oracle account linking
+- Authentication code management
+- Conversation session management
+"""
+
+from .database import (
+    init_database,
+    get_db_connection,
+    cleanup_expired_codes,
+    cleanup_expired_sessions,
+    get_database_stats,
+    DB_PATH,
+)
+
+from .operations import (
+    # User operations
+    create_or_update_user,
+    get_user,
+    link_user_to_oracle,
+    update_user_tokens,
+    update_user_last_active,
+    is_user_linked,
+    # Auth code operations
+    create_auth_code,
+    get_auth_code,
+    verify_and_use_auth_code,
+    get_pending_codes_for_user,
+    # Session operations
+    create_session,
+    get_session,
+    get_user_active_session,
+    update_session_state,
+    delete_session,
+    delete_user_sessions,
+)
+
+__all__ = [
+    # Database setup
+    'init_database',
+    'get_db_connection',
+    'cleanup_expired_codes',
+    'cleanup_expired_sessions',
+    'get_database_stats',
+    'DB_PATH',
+    # User operations
+    'create_or_update_user',
+    'get_user',
+    'link_user_to_oracle',
+    'update_user_tokens',
+    'update_user_last_active',
+    'is_user_linked',
+    # Auth code operations
+    'create_auth_code',
+    'get_auth_code',
+    'verify_and_use_auth_code',
+    'get_pending_codes_for_user',
+    # Session operations
+    'create_session',
+    'get_session',
+    'get_user_active_session',
+    'update_session_state',
+    'delete_session',
+    'delete_user_sessions',
+]